Competitive biosorption of ortho-cresol, phenol, chlorophenol and chromium(VI) ...

• Autor(es): Quintelas, C. ; Sousa, E. ; Silva, F. ; Neto, S. ; Tavares, M. T.
• Data: 2006
• Identificador Persistente: http://hdl.handle.net/1822/5496
• Origem: RepositóriUM - Universidade do Minho
• Assunto(s): Activated carbon; Arthrobacter viscosus; Biofilm; Biosorption; Chromium(VI); Organic compounds
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

A biofilm of Arthrobacter viscosus supported on granular activated carbon was used to remove chromium and organic compounds (chlorophenol, phenol and o-cresol) from aqueous solutions. The compounds were studied as single solutes and in different combinations between them and Cr(VI). Optimum Cr(VI) adsorption was observed at a phenol concentration of 100 mg/l and at an initial concentration of the metal of 60 mg/l. The maximum values of biosorption of organic compounds were 9.94 mg/g for phenol, 9.70 mg/g for chlorophenol and 13.99 mg/g for o-cresol. In terms of removal percentage, after 15 h of experiment, the affinity order was as follows: phenol > chlorophenol > o-cresol > chromium(VI).